Subsequent Event - Additional Information (Detail) - Ocean Shore Holding Co [Member] - New Jersey [Member] $ / shares in Units, $ in Millions	Jul. 13, 2016 USD ($) Banking_Office $ / shares
Subsequent Event [Line Items]
Cost of acquisition | $	$ 145.6
Common stock exchanged for each share of Ocean Shore common stock	0.9667
Cash to be received for each share of Ocean Shore common stock | $ / shares	$ 4.35
Number of banking offices operated | Banking_Office	11